PCA Instrumentation And Exporters Practice Question
Which of the following is a correct unit suffix for Prometheus metrics?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
_seconds
Prometheus recommends using base units (e.g., seconds for duration, bytes for memory) and appending the unit to the name.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
_total
Why it's wrong here
This is a suffix for counters, not a unit.
- ✗
_sum
Why it's wrong here
This is used for histogram and summary sums.
- ✗
_count
Why it's wrong here
This is used for histogram and summary counts.
- ✓
_seconds
Why this is correct
Units like _seconds or _bytes are recommended.
About these practice questions
One of 304 original PCA practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CNCF / Linux Foundation exam blueprint
This PCA practice question is part of Courseiva's free CNCF / Linux Foundation certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCA exam.